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EP1803678A2 - Operation device for a loading crane - Google Patents

Operation device for a loading crane Download PDF

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Publication number
EP1803678A2
EP1803678A2 EP06025560A EP06025560A EP1803678A2 EP 1803678 A2 EP1803678 A2 EP 1803678A2 EP 06025560 A EP06025560 A EP 06025560A EP 06025560 A EP06025560 A EP 06025560A EP 1803678 A2 EP1803678 A2 EP 1803678A2
Authority
EP
European Patent Office
Prior art keywords
crane
torque
operating device
loading crane
loading
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06025560A
Other languages
German (de)
French (fr)
Other versions
EP1803678A3 (en
Inventor
Werner Emminger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Palfinger AG
Original Assignee
Palfinger AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Palfinger AG filed Critical Palfinger AG
Publication of EP1803678A2 publication Critical patent/EP1803678A2/en
Publication of EP1803678A3 publication Critical patent/EP1803678A3/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/74Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88Safety gear
    • B66C23/94Safety gear for limiting slewing movements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/16Applications of indicating, registering, or weighing devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88Safety gear
    • B66C23/90Devices for indicating or limiting lifting moment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88Safety gear
    • B66C23/90Devices for indicating or limiting lifting moment
    • B66C23/905Devices for indicating or limiting lifting moment electrical

Definitions

  • the invention relates to an operating device for a loading crane, with a screen on which a load exerted by load and crane torque in relation to its maximum value can be displayed.
  • a limitation of the torque exerted on the storage of a loading crane is necessary in the sense of an overload protection in order to avoid an overuse of structural components of the crane.
  • the invention avoids the drawback presented in that the direction of the plane defined by the crane relative to a horizontal plane (swivel angle) and the momentary torque can be represented together with a curve which represents the maximum permissible torque for the entire angular range.
  • the loading crane shown has a on a base 8 about a vertical axis 14 rotatable stand 3, which inclined counter to the direction of the boom 5 to the rear
  • the pivot axis 4, about which the boom 5 can be moved up and down by means of the unit 13, is slightly displaced from the center of the base 8 to that side on which the tilting arm 7 is to be guided past the upright 3.
  • the Kipparm 7, which carries the only schematically illustrated, multi-part extension arm 11 is pivotable about a central axis 9 about the boom 5 down.
  • the movement of the tilting arm 7 is effected by a hydraulic unit 6, which is fastened on the one hand to the tilting arm, on the other hand to two pairs of pivoting levers.
  • the pivot levers 1 and 2 are in turn connected either to the boom 5 or 7 with the Kipparm.
  • the pressure in the lifting cylinder 13 is usually the measure of the torque exerted by the crane and the load attached thereto.
  • Each movement in the crane plane that is to say the drawing plane in FIG. 1, leads to a steady approach to the maximum value permissible with regard to overloading or tilting safety.
  • the situation is different for rotations about the vertical axis 14
  • information is conveyed to the operating personnel, which also indicates the approach to the maximum permissible value of the torque in the case of pivoting movements.
  • the direction of the crane can also be characterized by a radius in the form of a beam 25 emanating from the axis 14.
  • the length of this bar can be chosen to be constant or proportional to the distance of the crane tip of the axis 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

The apparatus has a display screen, where a torque exerted by a load and a loading crane is represented on the display screen, based on respective highest permissible value. A loading crane has a pillar, where the direction of the crane`s plane is defined by the loading crane with respect to a horizontal plane or pivot angle, and a current torque is displayed together with a curve (21) that represents highest permissible torque for an entire angular range. The display screen displays the torque as spacing from a pivot axis of the crane.

Description

Die Erfindung bezieht sich auf eine Bedienungseinrichtung für einen Ladekran, mit einem Bildschirm, auf dem ein von Last und Kran ausgeübtes Drehmoment in Beziehung zu dessen jeweils höchstzulässigen Wert darstellbar ist.The invention relates to an operating device for a loading crane, with a screen on which a load exerted by load and crane torque in relation to its maximum value can be displayed.

Eine Begrenzung des auf die Lagerung eines Ladekrans ausgeübten Drehmomentes ist im Sinne einer Überlastsicherung notwendig, um eine Überbeanspruchung struktureller Komponenten des Krans zu vermeiden. Darüber hinaus ist dafür Sorge zu tragen, dass ein den Kran tragendes Fahrzeug, das gegebenenfalls mit einer seitlichen Abstützung versehen ist, durch den Kran bzw. die Last nicht gekippt wird.A limitation of the torque exerted on the storage of a loading crane is necessary in the sense of an overload protection in order to avoid an overuse of structural components of the crane. In addition, it must be ensured that a crane-carrying vehicle, which is optionally provided with a lateral support, is not tilted by the crane or the load.

Bei Bewegung innerhalb der Kranebene reicht die derzeit übliche Darstellung des aktuellen Drehmomentes als Prozentsatz des höchstzulässigen Wertes leicht aus, um dem Bedienungspersonal zu signalisieren, dass eine bestimmte Bewegung zu einer sicherheitsbedingten Abschaltung führen könnte. Ein Problem entsteht jedoch dann, wenn der Kran um seine vertikale Achse geschwenkt wird. In der Regel ist nämlich davon auszugehen, dass das zulässige Kippmoment winkelabhängig ist. Wird beim Verschwenken des Kranes ein entsprechender Endschalter überfahren, kommt es somit zu einem abrupten Abstoppen der Schwenkbewegung, ohne dass die Bedienungsperson durch die derzeit übliche Anzeige vorgewamt wird.When moving within the crane plane, the current representation of the current torque as a percentage of the maximum value is readily sufficient to signal to the operator that a particular movement could result in a safety shutdown. A problem arises, however, when the crane is pivoted about its vertical axis. In general, it can be assumed that the permissible overturning moment is angle-dependent. If, during the pivoting of the crane, a corresponding limit switch is run over, there is thus an abrupt stopping of the pivoting movement, without the operator being prejudiced by the currently usual display.

Die Erfindung vermeidet den dargestellten Nachteil dadurch, dass die Richtung der durch den Kran definierten Ebene bezogen auf eine Horizontalebene (Schwenkwinkel) sowie das momentane Drehmoment zusammen mit einer Kurve darstellbar sind, welche für den gesamten Winkelbereich das höchstzulässige Drehmoment repräsentiert.The invention avoids the drawback presented in that the direction of the plane defined by the crane relative to a horizontal plane (swivel angle) and the momentary torque can be represented together with a curve which represents the maximum permissible torque for the entire angular range.

Weitere Einzelheiten der Erfindung werden anschließend anhand der Zeichnung erläutert. In dieser zeigt

Fig. 1
die Seitenansicht eines herkömmlichen Ladekrans,
Fig. 2
die Draufsicht auf ein erstes Ausführungsbeispiel in zwei Betriebszuständen und
Fig. 3
eine Darstellungsvariante hierzu.
Further details of the invention will be explained with reference to the drawing. In this shows
Fig. 1
the side view of a conventional loading crane,
Fig. 2
the top view of a first embodiment in two operating states and
Fig. 3
a representation variant for this.

Der dargestellte Ladekran weist einen auf einem Sockel 8 um eine vertikale Achse 14 drehbaren Ständer 3 auf, der entgegen der Richtung des Auslegers 5 nach hinten geneigt ist, Die Schwenkachse 4, um welche der Ausleger 5 mittels der Einheit 13 auf und ab bewegt werden kann, ist gegenüber dem Zentrum des Sockels 8 etwas auf jene Seite verschoben, auf welcher der Kipparm 7 am Ständer 3 vorbeigeführt werden soll. Der Kipparm 7, welcher den nur schematisch dargestellten, mehrteiligen Verlängerungsarm 11 trägt, ist um eine zentrale Achse 9 um den Ausleger 5 nach unten verschwenkbar. Die Bewegung des Kipparms 7 erfolgt durch eine Hydraulikeinheit 6, die einerseits am Kipparm, andererseits an zwei Paaren von Schwenkhebeln befestigt ist. Die Schwenkhebel 1 und 2 sind ihrerseits entweder mit dem Ausleger 5 oder mit dem Kipparm 7 verbunden.The loading crane shown has a on a base 8 about a vertical axis 14 rotatable stand 3, which inclined counter to the direction of the boom 5 to the rear The pivot axis 4, about which the boom 5 can be moved up and down by means of the unit 13, is slightly displaced from the center of the base 8 to that side on which the tilting arm 7 is to be guided past the upright 3. The Kipparm 7, which carries the only schematically illustrated, multi-part extension arm 11 is pivotable about a central axis 9 about the boom 5 down. The movement of the tilting arm 7 is effected by a hydraulic unit 6, which is fastened on the one hand to the tilting arm, on the other hand to two pairs of pivoting levers. The pivot levers 1 and 2 are in turn connected either to the boom 5 or 7 with the Kipparm.

Jeder Teil des in Fig. 1 dargestellten Verlängerungsarmes 11 ist über eine Kolbenstange 12 ausschiebbar, wobei nur die Kolbenstange für den äußersten Teil des teleskopartigen Verlängerungsarmes 11 zeichnerisch dargestellt ist.Each part of the extension arm 11 shown in Fig. 1 is pushed out via a piston rod 12, wherein only the piston rod for the outermost part of the telescopic extension arm 11 is shown in the drawing.

Der Druck im Hubzylinder 13 bildet üblicherweise das Maß für das vom Kran und der daran befestigten Last ausgeübte Drehmoment. Jede Bewegung in der Kranebene, also der Zeichenebene in Fig. 1, führt zu einer stetigen Annäherung an den in Hinblick auf Überlastung bzw. Kippsicherheit zulässigen Höchstwert. Anders ist die Situation bei Drehungen um die vertikale Achse 14 Um hier überraschende Abschaltungen beim Verschwenken des Kranes zu vermeiden, wird erfindungsgemäß dem Bedienungspersonal eine Information vermittelt, welche auch die Annäherung an den zulässigen Höchstwert des Drehmomentes im Falle von Schwenkbewegungen erkennen lässt.The pressure in the lifting cylinder 13 is usually the measure of the torque exerted by the crane and the load attached thereto. Each movement in the crane plane, that is to say the drawing plane in FIG. 1, leads to a steady approach to the maximum value permissible with regard to overloading or tilting safety. The situation is different for rotations about the vertical axis 14 In order to avoid surprising shutdowns when pivoting the crane, according to the invention information is conveyed to the operating personnel, which also indicates the approach to the maximum permissible value of the torque in the case of pivoting movements.

Wesentlich für die in Fig. 2 dargestellte Anzeige ist die Kurve 21, welche jedem Winkel um die Vertikalachse 14 des Kranes einen maximalen Wert des Drehmomentes zuordnet. Eine symbolische Darstellung des Fahrzeuges 23 mit Fahrerhaus 26 und seitlichen Abstützauslegern 24 erleichtert dabei die Orientierung. Durch die Markierung 27 ergibt sich die Kranrichtung als die Richtung von der Achse 14 hin zur Markierung 27. Der Radialabstand dieser Markierung 27 entspricht jedoch nicht der Horizontalprojektion der Kranspitze, er gibt viel mehr das momentane Drehmoment im Maßstab der Kurve 21 an. Verschwenkt nun die Bedienungsperson den Kran links in Fig. 2 entgegen dem Uhrzeigersinn, so wird ihr augenfällig, dass eine weitere Bewegung in den beschränkten Bereich vor dem Fahrerhaus 26 führen würde. In gleicher Weise ergibt sich bei der Situation rechts in Fig. 2, dass wegen der geringen Ausfahrlänge des Auslegers 24' im rechten hinteren Fahrzeugbereich erhöhte Kippgefahr besteht, sodass nur mehr ein geringes Verschwenken im Uhrzeigersinn möglich ist.Essential for the display shown in Fig. 2 is the curve 21, which assigns a maximum value of the torque to each angle about the vertical axis 14 of the crane. A symbolic representation of the vehicle 23 with cab 26 and lateral Abstützauslegern 24 facilitates orientation. By marking 27, the crane direction results as the direction from the axis 14 to the mark 27. The radial distance of this mark 27, however, does not correspond to the horizontal projection of the crane tip, he gives much more the instantaneous torque in the scale of the curve 21. If the operator swivels the crane on the left in FIG. 2 in the counterclockwise direction, it becomes obvious that further movement would lead to the restricted area in front of the cab 26. In the same way, in the situation on the right in FIG. 2, there is an increased risk of tipping due to the small extension length of the arm 24 'in the right rear vehicle area, so that only a slight clockwise pivoting is possible.

Wie Fig. 3 zeigt, kann man die Richtung des Kranes auch durch einen von der Achse 14 ausgehenden Radius in Form eines Balkens 25 charakterisieren. Die Länge dieses Balkens kann man konstant wählen oder proportional zum Abstand der Kranspitze von der Achse 14. Wesentlich ist aber wiederum die Markierung 27 - hier die Grenze zwischen dem gefüllten und ungefüllten Teil des Balkens 25 - welche anzeigt, wie weit man sich von dem durch die Kurve 21 definierten höchstzulässigen Drehmoment entfernt befindet.As shown in FIG. 3, the direction of the crane can also be characterized by a radius in the form of a beam 25 emanating from the axis 14. The length of this bar can be chosen to be constant or proportional to the distance of the crane tip of the axis 14. However, it is essential again the mark 27 - here the boundary between the filled and unfilled part of the bar 25 - which indicates how far from the by the curve 21 defined maximum torque is removed.

Claims (4)

Bedienungseinrichtung für einen Ladekran, mit einem Bildschirm, auf dem ein von Last und Kran ausgeübtes Drehmoment in Beziehung zu dessen jeweils höchstzulässigen Wert darstellbar ist, dadurch gekennzeichnet, dass die Richtung der durch den Kran definierten Ebene bezogen auf eine Horizontalebene (Schwenkwinkel) sowie das momentane Drehmoment zusammen mit einer Kurve (21) darstellbar sind, welche für den gesamten Winkelbereich das höchstzulässige Drehmoment repräsentiert.Operating device for a loading crane, with a screen on which a torque exerted by load and crane in relation to its maximum value can be represented, characterized in that the direction of the plane defined by the crane relative to a horizontal plane (swivel angle) and the instantaneous Torque can be represented together with a curve (21), which represents the maximum permissible torque for the entire angular range. Bedienungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Drehmoment als Abstand von der Schwenkachse (14) des Krans darstellbar ist.Operating device according to claim 1, characterized in that the torque as a distance from the pivot axis (14) of the crane can be displayed. Bedienungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zusätzlich eine Draufsicht auf das Fahrzeug (23) und seine Abstützungen (24) vorgesehen ist.Operating device according to claim 1 or 2, characterized in that in addition a plan view of the vehicle (23) and its supports (24) is provided. Bedienungseinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Kran durch einen Balken (25) symbolisiert ist, an welchem das momentane Drehmoment ablesbar ist.Operating device according to claim 3, characterized in that the crane is symbolized by a bar (25) on which the instantaneous torque can be read.
EP06025560A 2005-12-27 2006-12-11 Operation device for a loading crane Withdrawn EP1803678A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0089205U AT9138U1 (en) 2005-12-27 2005-12-27 OPERATING DEVICE FOR A LOADING CRANE

Publications (2)

Publication Number Publication Date
EP1803678A2 true EP1803678A2 (en) 2007-07-04
EP1803678A3 EP1803678A3 (en) 2008-11-26

Family

ID=37776753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06025560A Withdrawn EP1803678A3 (en) 2005-12-27 2006-12-11 Operation device for a loading crane

Country Status (7)

Country Link
US (1) US20070144995A1 (en)
EP (1) EP1803678A3 (en)
JP (1) JP2007176704A (en)
KR (1) KR20070069052A (en)
CN (1) CN1990375A (en)
AT (1) AT9138U1 (en)
AU (1) AU2006252284A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101195562B1 (en) 2007-07-10 2012-10-29 삼성전자주식회사 Air conditioner
CN102180417A (en) * 2011-01-26 2011-09-14 徐州赫思曼电子有限公司 Moment limiter for providing protection for safety rotary area in various supporting leg states
US9004842B2 (en) 2011-10-10 2015-04-14 Wastequip, Llc Hoist apparatus
CN103676965B (en) * 2013-12-12 2016-03-30 中联重科股份有限公司 Engineering machinery arm support control method, device and system and engineering machinery
WO2017216945A1 (en) * 2016-06-17 2017-12-21 株式会社前田製作所 Mobile crane
CN108275587A (en) * 2018-03-26 2018-07-13 浙江三装备有限公司 Super-starting balance weight luffing device and crane
CN113371626B (en) * 2021-05-21 2023-09-15 中国十七冶集团有限公司 Automatic safety device capable of preventing lightning stroke and resisting strong wind force for tower crane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0558589A (en) * 1991-08-30 1993-03-09 Kobe Steel Ltd Safety display device for crane
EP0614845A2 (en) * 1988-12-27 1994-09-14 Kato Works Co., Ltd. Crane safety apparatus
EP0857687A1 (en) * 1995-03-03 1998-08-12 Komatsu Ltd. Device for indicating movable range of mobile crane vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2415599A1 (en) * 1978-01-26 1979-08-24 B & A Eng Co LOAD WEIGHING DEVICE FOR CRANES
US4752012A (en) * 1986-08-29 1988-06-21 Harnischfeger Corporation Crane control means employing load sensing devices
US5730305A (en) * 1988-12-27 1998-03-24 Kato Works Co., Ltd. Crane safety apparatus
US5143232A (en) * 1991-09-18 1992-09-01 Stewart James T Crane load instrument and method therefor
US5598935A (en) * 1993-03-18 1997-02-04 American Crane Corporation Frame structure for lift crane machinery
AU772902B2 (en) * 1999-12-15 2004-05-13 Caterpillar Inc. System and method for automatically controlling a work implement of an earthmoving machine based on discrete values of torque

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0614845A2 (en) * 1988-12-27 1994-09-14 Kato Works Co., Ltd. Crane safety apparatus
JPH0558589A (en) * 1991-08-30 1993-03-09 Kobe Steel Ltd Safety display device for crane
EP0857687A1 (en) * 1995-03-03 1998-08-12 Komatsu Ltd. Device for indicating movable range of mobile crane vehicle

Also Published As

Publication number Publication date
KR20070069052A (en) 2007-07-02
US20070144995A1 (en) 2007-06-28
JP2007176704A (en) 2007-07-12
AU2006252284A1 (en) 2007-07-12
EP1803678A3 (en) 2008-11-26
AT9138U1 (en) 2007-05-15
CN1990375A (en) 2007-07-04

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